Hmm, I like the interior (love the fish tank) but I think - the outside lights are actually a bit small and out of scale somehow.

You could try the Pets EP outside lights as they have a similar look to the building style, or maybe go with the standard street light. I think you need height.

Is that space with the pink sofa the employee breakroom? If it is, it is huge and I would consider making it a bit smaller and seeing if you can get a video games display in downstairs (or if you have uni, the mp3 sales unit).